Secondhand Vape Exposure: Effects, Who's at Risk, and More Truth Initiative Secondhand smoke is classified as a Group A carcinogen, a substance known to cause #cancer in humans and animals. Learn more at the link in Instagram Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM More bad news about vaping: Teens increasingly are breathing in secondhand e cigarette vapors, report says Chicago Tribune TobaccoControlYouthEngagement Vaping can cause severe lung complications, which in some cases can be fatal The tobacco epidemic is one of the biggest public health threats the world has ever faced, killing more Evidence Mounts About the Health Impact of Second Hand Vaping Bisnar Chase